Devices and methods for expression of bodily fluids from an incision
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a bodily fluid and incision technology, applied in the field of bodily fluid sampling, can solve the problems of pain, infection, hematoma and other bleeding complications, and the inability to repeat direct vascular blood sampling on a routine basis, and achieve the effect of enhancing the grasping of the skin
Inactive Publication Date: 2009-05-07
ROCHE DIABETES CARE INC
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However, such direct vascular blood sampling can have several limitations, including pain, infection, and hematoma and other bleeding complications.
In addition, direct vascular blood sampling is not suitable for repeating on a routine basis, can be extremely difficult and is not advised for patients to perform on themselves.
However, the fingertip also has a large concentration of nerve endings, and lancing the fingertip can therefore be painful.
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[0050]For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated devices and methods, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
[0051]The present invention provides a variety of devices and methods which separately or in combination are useful in enhancing the expression of fluid from an incision in the skin. This expression of the fluid results in a fluid sample that is larger, and / or produced more quickly, than would otherwise result. Expression of a bodily fluid from an incision is desirable in many instances. The lancin...
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Abstract
Systems and methods for the expression of bodily fluid from an incision in the skin include devices which bear against the skin in a manner to retain the fluid adjacent the incision site and urge the fluid inwardly toward the incision. Systems utilize a constricting member, a bi-stable expression member, or a pressing member. The present invention further encompasses combinations of the foregoing expression systems with each other, as well as with other expression devices known in the art. Moreover, the invention includes the combination of the expression systems with incising, sampling and / or testing systems, particularly in a single, integrated device. The present invention also contemplates the associated methods for expressing bodily fluid from an incision, including in combination with methods for incising, sampling and / or testing of the bodily fluid.
Description
[0001]This application is a continuation of U.S. application Ser. No. 10 / 165,102, filed Jun. 7, 2002 (attorney docket no. WP 21373 US1 / 7404-365), which is a continuation-in-part of U.S. patent application Ser. No. 09 / 879,991, filed Jun. 14, 2001, now U.S. Pat. No. 6,706,000 (attorney docket no. WP 21373 US / 7404-135), and U.S. application Ser. No. 10 / 165,102 claims the benefit of U.S. Patent Provisional Application No. 60 / 296,949, filed Jun. 8, 2001, U.S. Provisional Application No. 60 / 296,950, filed Jun. 8, 2001, U.S. Provisional Patent Application No. 60 / 315,873, filed Aug. 29, 2001, and U.S. Provisional Application No. 60 / 315,968, filed Aug. 29, 2001. The entireties of the aforementioned applications are hereby incorporated by reference.FIELD OF THE INVENTION[0002]The present invention relates to the sampling of a bodily fluid obtained from an incision in the skin, and more particularly to acquiring the fluid by capillary action. The invention also may include the combination of s...
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